Configuring A Tunnel Policy Applied To Bgp/Mpls Ipv6 Vpn; Establishing The Configuration Task - Huawei quidway s7700 Configuration Manual

Quidway S7700 Smart Routing Switch
Configuration Guide - VPN
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Example
Run the preceding commands. If the routing table of the VPN-spoke has routes to all the Spoke
stations, and the routing table of the VPN-hub has routes to the Hub and all the Spoke stations,
it means the configuration succeeds.
Additionally, Hub-CE and all the Spoke-CEs have routes to the Hub and all the Spoke stations.
4.6 Configuring a Tunnel Policy applied to BGP/MPLS IPv6
VPN
By default, the system selects an LSP for a BGP/MPLS IPv6 VPN and no load balancing is
carried out. If load balancing or other types of tunnels are required, you need to configure a
tunnel policy for the backbone network of the IPv6 VPN.

4.6.1 Establishing the Configuration Task

Before configuring the tunnel policy for the backbone network of a BGP/MPLS IPv6 VPN,
familiarize yourself with the applicable environment, complete the pre-configuration tasks, and
obtain the required data. This can help you complete the configuration task quickly and
accurately.
Applicable Environment
By default, an LSP is selected as the tunnel for a VPN, and no load balancing is carried out. To
perform load balancing or select tunnels of other types, you need to configure a tunnel policy in
select-sequence mode and then apply it.
In the IPv6 VPN, a tunnel policy is applied on IPv6 VPN instances.
In inter-AS VPN-Option B, inter-AS VPN-Option C and carrier's carrier, only LSPs are selected
as public network tunnels.
A tunnel policy in select-sequence mode includes the tunnel selection sequence and the number
of tunnels for load balancing.
Currently, optional tunnel types for BGP/MPLS IPv6 VPN are GRE, LSP configured statically
or dynamically, and CR-LSP (MPLS TE).
Pre-configuration Tasks
Before configuring a tunnel policy, configure the following tasks:
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Issue 01 (2011-07-15)
Run the display ipv6 routing-table command to check routing information on the Hub-
CE and all the Spoke-CEs.
Enabling IPv6 on the PEs and on the interfaces that need to be configured with IPv6
Creating the IPv6 VPN instances on PE
Setting up a tunnel between two PEs (LSP, MPLS TE or GRE)
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